Outdoor heater



FIG. 1 is a front view of an outdoor heater in accordance with the present invention;

FIG. 2 is a rear view of the outdoor heater in FIG. 1;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines in the drawings represent portions of the heater that form no part of the claimed design. 

CLAIM The ornamental design of an outdoor heater, substantially as shown and described. 